<html>
  <head>
    <style>
      body {
        margin: 0;
        padding: 0;
      }
      .items {
        display: flex;
        flex-wrap: wrap;
        padding: 1%;
      }
      .item {
        width: 23%;
        height: 100px;
        margin-top: 20px;
        margin: 1%;
        background: rgb(124, 203, 235);
        transition: all 0.2s;
      }
      .item:hover{
        box-shadow: 0px 0px 3px 3px #ccc;
      }
    </style>
  </head>
  <body>
    <div id="root" class="items">
      <div class="item"></div>
      <div class="item"></div>
      <div class="item"></div>
      <div class="item"></div>
      <div class="item"></div>
      <div class="item"></div>
      <div class="item"></div>
      <div class="item"></div>
      <div class="item"></div>
      <div class="item"></div>
      <div class="item"></div>
    </div>
  </body>
</html>
